2017
DOI: 10.3390/polym9120672
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Effect of Superabsorbent Polymer on the Properties of Concrete

Abstract: Incorporating superabsorbent polymer (SAP), which has the abilities of absorption and desorption in concrete can achieve the effect of internal curing. The influences of the volume, particle size and ways of entrained water of SAP on the workability, compressive strength, shrinkage, carbonation resistance and chloride penetration resistance of concrete were analyzed through the macroscopic and microscopic test. The results show that pre-absorbed SAP can increase the slump of the mixture, but SAP without water … Show more

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Cited by 87 publications
(51 citation statements)
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“…Depending on their structure, polymers can influence the rheological properties [ 5 ], increase tensile strength [ 6 ] or help control the curing process [ 7 ]. Superabsorbent polymers (SAP) [ 8 , 9 ] have gained significant interest as additives in concrete due to their unique properties. These are e.g., the mitigation of autogenous [ 10 ] and plastic shrinkage [ 11 ] or increasing the freeze–thaw resistance [ 12 , 13 ].…”
Section: Introductionmentioning
confidence: 99%
“…Depending on their structure, polymers can influence the rheological properties [ 5 ], increase tensile strength [ 6 ] or help control the curing process [ 7 ]. Superabsorbent polymers (SAP) [ 8 , 9 ] have gained significant interest as additives in concrete due to their unique properties. These are e.g., the mitigation of autogenous [ 10 ] and plastic shrinkage [ 11 ] or increasing the freeze–thaw resistance [ 12 , 13 ].…”
Section: Introductionmentioning
confidence: 99%
“…Hydrogel particles can absorb up to 1,500 times their dry weight in water [48] and can be used in place of traditional lightweight aggregate (LWA) for internal curing. Hydrogel particles have several advantages over LWA in that they require no presoaking and can be added in very small amounts to cementitious mixtures (e.g., 0.2 % by weight of cement) while still providing effective internal curing [1,49,50]. Although hydrogel particles are mechanically weaker than LWA, the direct impact that hydrogel particles have on the compressive strength of mortar and concrete is still unclear.…”
Section: Introductionmentioning
confidence: 99%
“…The water absorption and initial sorptivity of S-1.5 in Figure 5 and Figure 6 are relatively high compared to the other specimens, as both the SAPs in cracks, and some of the SAPs inside the cement matrix which was connected to the SAP voids in the cracks, could absorb capillary water. However, as the connection between SAP voids in crack surfaces and SAP voids in the cement matrix gradually became blocked, due to the progress of hydration reactions and formation of healing products [37,38], the initial sorptivity of the S-1.5 specimen noticeably decreased, as the number of wet/dry cycles increased, as shown in Figure 5 and Figure 6.…”
Section: Resultsmentioning
confidence: 99%